journal article
LitStream Collection
doi: 10.1007/BF03257782pmid: N/A
Abstract Powder metallurgy (P/M) has emerged as a source of new and viable manufacturing processes—with compelling economic and technical advantages over conventional ingot metallurgy practice. As well as delineating historical milestones and profiling today’s industry, this article reviews the modern approaches to powder production and consolidation from both the scientific and technological viewpoints. Some relationships between powder processing, microstructure and mechanical properties are discussed, with particular emphasis on the specialty alloys. Finally, an objective look at the interface between powder metallurgy and rapid solidification is presented.
doi: 10.1007/BF03257783pmid: N/A
Abstract The fabrication of high performance materials using liquid phase sintering requires an understanding of the underlying equilibrium phase diagram. Although sintering is not an equilibrium process, it does represent an approach to equilibrium; thus, phase diagrams can aid in defining process variables. The basic concepts are organized to indicate the phase diagram features important to successful sintering in the presence of a liquid phase. Example phase diagrams are offered for liquid metal infiltration of porous metal compacts, persistent liquid phase sintering, supersolidus sintering, transient liquid phase sintering, and reactive sintering.
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